diff options
Diffstat (limited to 'Lib/test/test_struct.py')
| -rw-r--r-- | Lib/test/test_struct.py | 491 |
1 files changed, 257 insertions, 234 deletions
diff --git a/Lib/test/test_struct.py b/Lib/test/test_struct.py index 9ed3220..2ccaad2 100644 --- a/Lib/test/test_struct.py +++ b/Lib/test/test_struct.py @@ -8,6 +8,18 @@ from test.support import run_unittest ISBIGENDIAN = sys.byteorder == "big" IS32BIT = sys.maxsize == 0x7fffffff +integer_codes = 'b', 'B', 'h', 'H', 'i', 'I', 'l', 'L', 'q', 'Q' +byteorders = '', '@', '=', '<', '>', '!' + +# Native 'q' packing isn't available on systems that don't have the C +# long long type. +try: + struct.pack('q', 5) +except struct.error: + HAVE_LONG_LONG = False +else: + HAVE_LONG_LONG = True + def string_reverse(s): return s[::-1] @@ -35,8 +47,8 @@ class StructTest(unittest.TestCase): self.assertRaises(struct.error, struct.pack, 'iii', 3) self.assertRaises(struct.error, struct.pack, 'i', 3, 3, 3) - self.assertRaises(struct.error, struct.pack, 'i', 'foo') - self.assertRaises(struct.error, struct.pack, 'P', 'foo') + self.assertRaises((TypeError, struct.error), struct.pack, 'i', 'foo') + self.assertRaises((TypeError, struct.error), struct.pack, 'P', 'foo') self.assertRaises(struct.error, struct.unpack, 'd', b'flap') s = struct.pack('ii', 1, 2) self.assertRaises(struct.error, struct.unpack, 'iii', s) @@ -70,177 +82,139 @@ class StructTest(unittest.TestCase): # Test some of the new features in detail # (format, argument, big-endian result, little-endian result, asymmetric) tests = [ - ('c', 'a', 'a', 'a', 0), - ('xc', 'a', '\0a', '\0a', 0), - ('cx', 'a', 'a\0', 'a\0', 0), - ('s', 'a', 'a', 'a', 0), - ('0s', 'helloworld', '', '', 1), - ('1s', 'helloworld', 'h', 'h', 1), - ('9s', 'helloworld', 'helloworl', 'helloworl', 1), - ('10s', 'helloworld', 'helloworld', 'helloworld', 0), - ('11s', 'helloworld', 'helloworld\0', 'helloworld\0', 1), - ('20s', 'helloworld', 'helloworld'+10*'\0', 'helloworld'+10*'\0', 1), - ('b', 7, '\7', '\7', 0), - ('b', -7, '\371', '\371', 0), - ('B', 7, '\7', '\7', 0), - ('B', 249, '\371', '\371', 0), - ('h', 700, '\002\274', '\274\002', 0), - ('h', -700, '\375D', 'D\375', 0), - ('H', 700, '\002\274', '\274\002', 0), - ('H', 0x10000-700, '\375D', 'D\375', 0), - ('i', 70000000, '\004,\035\200', '\200\035,\004', 0), - ('i', -70000000, '\373\323\342\200', '\200\342\323\373', 0), - ('I', 70000000, '\004,\035\200', '\200\035,\004', 0), - ('I', 0x100000000-70000000, '\373\323\342\200', '\200\342\323\373', 0), - ('l', 70000000, '\004,\035\200', '\200\035,\004', 0), - ('l', -70000000, '\373\323\342\200', '\200\342\323\373', 0), - ('L', 70000000, '\004,\035\200', '\200\035,\004', 0), - ('L', 0x100000000-70000000, '\373\323\342\200', '\200\342\323\373', 0), - ('f', 2.0, '@\000\000\000', '\000\000\000@', 0), - ('d', 2.0, '@\000\000\000\000\000\000\000', - '\000\000\000\000\000\000\000@', 0), - ('f', -2.0, '\300\000\000\000', '\000\000\000\300', 0), - ('d', -2.0, '\300\000\000\000\000\000\000\000', - '\000\000\000\000\000\000\000\300', 0), - ('?', 0, '\0', '\0', 0), - ('?', 3, '\1', '\1', 1), - ('?', True, '\1', '\1', 0), - ('?', [], '\0', '\0', 1), - ('?', (1,), '\1', '\1', 1), + ('c', b'a', b'a', b'a', 0), + ('xc', b'a', b'\0a', b'\0a', 0), + ('cx', b'a', b'a\0', b'a\0', 0), + ('s', b'a', b'a', b'a', 0), + ('0s', b'helloworld', b'', b'', 1), + ('1s', b'helloworld', b'h', b'h', 1), + ('9s', b'helloworld', b'helloworl', b'helloworl', 1), + ('10s', b'helloworld', b'helloworld', b'helloworld', 0), + ('11s', b'helloworld', b'helloworld\0', b'helloworld\0', 1), + ('20s', b'helloworld', b'helloworld'+10*b'\0', b'helloworld'+10*b'\0', 1), + ('b', 7, b'\7', b'\7', 0), + ('b', -7, b'\371', b'\371', 0), + ('B', 7, b'\7', b'\7', 0), + ('B', 249, b'\371', b'\371', 0), + ('h', 700, b'\002\274', b'\274\002', 0), + ('h', -700, b'\375D', b'D\375', 0), + ('H', 700, b'\002\274', b'\274\002', 0), + ('H', 0x10000-700, b'\375D', b'D\375', 0), + ('i', 70000000, b'\004,\035\200', b'\200\035,\004', 0), + ('i', -70000000, b'\373\323\342\200', b'\200\342\323\373', 0), + ('I', 70000000, b'\004,\035\200', b'\200\035,\004', 0), + ('I', 0x100000000-70000000, b'\373\323\342\200', b'\200\342\323\373', 0), + ('l', 70000000, b'\004,\035\200', b'\200\035,\004', 0), + ('l', -70000000, b'\373\323\342\200', b'\200\342\323\373', 0), + ('L', 70000000, b'\004,\035\200', b'\200\035,\004', 0), + ('L', 0x100000000-70000000, b'\373\323\342\200', b'\200\342\323\373', 0), + ('f', 2.0, b'@\000\000\000', b'\000\000\000@', 0), + ('d', 2.0, b'@\000\000\000\000\000\000\000', + b'\000\000\000\000\000\000\000@', 0), + ('f', -2.0, b'\300\000\000\000', b'\000\000\000\300', 0), + ('d', -2.0, b'\300\000\000\000\000\000\000\000', + b'\000\000\000\000\000\000\000\300', 0), + ('?', 0, b'\0', b'\0', 0), + ('?', 3, b'\1', b'\1', 1), + ('?', True, b'\1', b'\1', 0), + ('?', [], b'\0', b'\0', 1), + ('?', (1,), b'\1', b'\1', 1), ] for fmt, arg, big, lil, asy in tests: - big = bytes(big, "latin-1") - lil = bytes(lil, "latin-1") for (xfmt, exp) in [('>'+fmt, big), ('!'+fmt, big), ('<'+fmt, lil), ('='+fmt, ISBIGENDIAN and big or lil)]: res = struct.pack(xfmt, arg) self.assertEqual(res, exp) self.assertEqual(struct.calcsize(xfmt), len(res)) rev = struct.unpack(xfmt, res)[0] - if isinstance(arg, str): - # Strings are returned as bytes since you can't know the - # encoding of the string when packed. - arg = bytes(arg, 'latin1') if rev != arg: self.assertTrue(asy) - def test_native_qQ(self): - # can't pack -1 as unsigned regardless - self.assertRaises((struct.error, OverflowError), struct.pack, "Q", -1) - # can't pack string as 'q' regardless - self.assertRaises(struct.error, struct.pack, "q", "a") - # ditto, but 'Q' - self.assertRaises(struct.error, struct.pack, "Q", "a") - - try: - struct.pack("q", 5) - except struct.error: - # does not have native q/Q - pass - else: - nbytes = struct.calcsize('q') - # The expected values here are in big-endian format, primarily - # because I'm on a little-endian machine and so this is the - # clearest way (for me) to force the code to get exercised. - for format, input, expected in ( - ('q', -1, '\xff' * nbytes), - ('q', 0, '\x00' * nbytes), - ('Q', 0, '\x00' * nbytes), - ('q', 1, '\x00' * (nbytes-1) + '\x01'), - ('Q', (1 << (8*nbytes))-1, '\xff' * nbytes), - ('q', (1 << (8*nbytes-1))-1, '\x7f' + '\xff' * (nbytes - 1))): - expected = bytes(expected, "latin-1") - got = struct.pack(format, input) - native_expected = bigendian_to_native(expected) - self.assertEqual(got, native_expected) - retrieved = struct.unpack(format, got)[0] - self.assertEqual(retrieved, input) - - def test_standard_integers(self): - # Standard integer tests (bBhHiIlLqQ). + def test_calcsize(self): + expected_size = { + 'b': 1, 'B': 1, + 'h': 2, 'H': 2, + 'i': 4, 'I': 4, + 'l': 4, 'L': 4, + 'q': 8, 'Q': 8, + } + + # standard integer sizes + for code in integer_codes: + for byteorder in '=', '<', '>', '!': + format = byteorder+code + size = struct.calcsize(format) + self.assertEqual(size, expected_size[code]) + + # native integer sizes + native_pairs = 'bB', 'hH', 'iI', 'lL' + if HAVE_LONG_LONG: + native_pairs += 'qQ', + for format_pair in native_pairs: + for byteorder in '', '@': + signed_size = struct.calcsize(byteorder + format_pair[0]) + unsigned_size = struct.calcsize(byteorder + format_pair[1]) + self.assertEqual(signed_size, unsigned_size) + + # bounds for native integer sizes + self.assertEqual(struct.calcsize('b'), 1) + self.assertLessEqual(2, struct.calcsize('h')) + self.assertLessEqual(4, struct.calcsize('l')) + self.assertLessEqual(struct.calcsize('h'), struct.calcsize('i')) + self.assertLessEqual(struct.calcsize('i'), struct.calcsize('l')) + if HAVE_LONG_LONG: + self.assertLessEqual(8, struct.calcsize('q')) + self.assertLessEqual(struct.calcsize('l'), struct.calcsize('q')) + + def test_integers(self): + # Integer tests (bBhHiIlLqQ). import binascii class IntTester(unittest.TestCase): - - def __init__(self, formatpair, bytesize): + def __init__(self, format): super(IntTester, self).__init__(methodName='test_one') - self.assertEqual(len(formatpair), 2) - self.formatpair = formatpair - for direction in "<>!=": - for code in formatpair: - format = direction + code - self.assertEqual(struct.calcsize(format), bytesize) - self.bytesize = bytesize - self.bitsize = bytesize * 8 - self.signed_code, self.unsigned_code = formatpair - self.unsigned_min = 0 - self.unsigned_max = 2**self.bitsize - 1 - self.signed_min = -(2**(self.bitsize-1)) - self.signed_max = 2**(self.bitsize-1) - 1 + self.format = format + self.code = format[-1] + self.byteorder = format[:-1] + if not self.byteorder in byteorders: + raise ValueError("unrecognized packing byteorder: %s" % + self.byteorder) + self.bytesize = struct.calcsize(format) + self.bitsize = self.bytesize * 8 + if self.code in tuple('bhilq'): + self.signed = True + self.min_value = -(2**(self.bitsize-1)) + self.max_value = 2**(self.bitsize-1) - 1 + elif self.code in tuple('BHILQ'): + self.signed = False + self.min_value = 0 + self.max_value = 2**self.bitsize - 1 + else: + raise ValueError("unrecognized format code: %s" % + self.code) def test_one(self, x, pack=struct.pack, unpack=struct.unpack, unhexlify=binascii.unhexlify): - # Try signed. - code = self.signed_code - if self.signed_min <= x <= self.signed_max: - # Try big-endian. - expected = x - if x < 0: - expected += 1 << self.bitsize - self.assertTrue(expected > 0) - expected = hex(expected)[2:] # chop "0x" - if len(expected) & 1: - expected = "0" + expected - expected = unhexlify(expected) - expected = b"\x00" * (self.bytesize - len(expected)) + expected - - # Pack work? - format = ">" + code - got = pack(format, x) - self.assertEqual(got, expected) - - # Unpack work? - retrieved = unpack(format, got)[0] - self.assertEqual(x, retrieved) - # Adding any byte should cause a "too big" error. - self.assertRaises((struct.error, TypeError), - unpack, format, b'\x01' + got) - - # Try little-endian. - format = "<" + code - expected = string_reverse(expected) - - # Pack work? - got = pack(format, x) - self.assertEqual(got, expected) - - # Unpack work? - retrieved = unpack(format, got)[0] - self.assertEqual(x, retrieved) - - # Adding any byte should cause a "too big" error. - self.assertRaises((struct.error, TypeError), - unpack, format, b'\x01' + got) - - else: - # x is out of range -- verify pack realizes that. - self.assertRaises(struct.error, pack, ">" + code, x) - self.assertRaises(struct.error, pack, "<" + code, x) - - # Much the same for unsigned. - code = self.unsigned_code - if self.unsigned_min <= x <= self.unsigned_max: - # Try big-endian. - format = ">" + code + format = self.format + if self.min_value <= x <= self.max_value: expected = x - expected = hex(expected)[2:] # chop "0x" + if self.signed and x < 0: + expected += 1 << self.bitsize + self.assertGreaterEqual(expected, 0) + expected = '%x' % expected if len(expected) & 1: expected = "0" + expected + expected = expected.encode('ascii') expected = unhexlify(expected) - expected = b"\x00" * (self.bytesize - len(expected)) + expected + expected = (b"\x00" * (self.bytesize - len(expected)) + + expected) + if (self.byteorder == '<' or + self.byteorder in ('', '@', '=') and not ISBIGENDIAN): + expected = string_reverse(expected) + self.assertEqual(len(expected), self.bytesize) # Pack work? got = pack(format, x) @@ -251,29 +225,12 @@ class StructTest(unittest.TestCase): self.assertEqual(x, retrieved) # Adding any byte should cause a "too big" error. - self.assertRaises((struct.error, TypeError), - unpack, format, b'\x01' + got) - - # Try little-endian. - format = "<" + code - expected = string_reverse(expected) - - # Pack work? - got = pack(format, x) - self.assertEqual(got, expected) - - # Unpack work? - retrieved = unpack(format, got)[0] - self.assertEqual(x, retrieved) - - # Adding any byte should cause a "too big" error. - self.assertRaises((struct.error, TypeError), - unpack, format, b'\x01' + got) - + self.assertRaises((struct.error, TypeError), unpack, format, + b'\x01' + got) else: # x is out of range -- verify pack realizes that. - self.assertRaises(struct.error, pack, ">" + code, x) - self.assertRaises(struct.error, pack, "<" + code, x) + self.assertRaises((OverflowError, ValueError, struct.error), + pack, format, x) def run(self): from random import randrange @@ -290,47 +247,95 @@ class StructTest(unittest.TestCase): val = (val << 8) | randrange(256) values.append(val) - # Try all those, and their negations, and +-1 from them. Note - # that this tests all power-of-2 boundaries in range, and a few out - # of range, plus +-(2**n +- 1). + # Values absorbed from other tests + values.extend([300, 700000, sys.maxsize*4]) + + # Try all those, and their negations, and +-1 from + # them. Note that this tests all power-of-2 + # boundaries in range, and a few out of range, plus + # +-(2**n +- 1). for base in values: for val in -base, base: for incr in -1, 0, 1: x = val + incr - try: - x = int(x) - except OverflowError: - pass self.test_one(x) # Some error cases. - for direction in "<>": - for code in self.formatpair: - for badobject in "a string", 3+42j, randrange, -1729.0: - self.assertRaises(struct.error, - struct.pack, direction + code, - badobject) - - for args in [("bB", 1), - ("hH", 2), - ("iI", 4), - ("lL", 4), - ("qQ", 8)]: - t = IntTester(*args) - t.run() + class NotAnInt: + def __int__(self): + return 42 + + # Objects with an '__index__' method should be allowed + # to pack as integers. That is assuming the implemented + # '__index__' method returns and 'int' or 'long'. + class Indexable(object): + def __init__(self, value): + self._value = value + + def __index__(self): + return self._value + + # If the '__index__' method raises a type error, then + # '__int__' should be used with a deprecation warning. + class BadIndex(object): + def __index__(self): + raise TypeError + + def __int__(self): + return 42 + + self.assertRaises((TypeError, struct.error), + struct.pack, self.format, + "a string") + self.assertRaises((TypeError, struct.error), + struct.pack, self.format, + randrange) + self.assertRaises((TypeError, struct.error), + struct.pack, self.format, + 3+42j) + self.assertRaises((TypeError, struct.error), + struct.pack, self.format, + NotAnInt()) + self.assertRaises((TypeError, struct.error), + struct.pack, self.format, + BadIndex()) + + # Check for legitimate values from '__index__'. + for obj in (Indexable(0), Indexable(10), Indexable(17), + Indexable(42), Indexable(100), Indexable(127)): + try: + struct.pack(format, obj) + except: + self.fail("integer code pack failed on object " + "with '__index__' method") + + # Check for bogus values from '__index__'. + for obj in (Indexable(b'a'), Indexable('b'), Indexable(None), + Indexable({'a': 1}), Indexable([1, 2, 3])): + self.assertRaises((TypeError, struct.error), + struct.pack, self.format, + obj) + + for code in integer_codes: + for byteorder in byteorders: + if (byteorder in ('', '@') and code in ('q', 'Q') and + not HAVE_LONG_LONG): + continue + format = byteorder+code + t = IntTester(format) + t.run() def test_p_code(self): # Test p ("Pascal string") code. for code, input, expected, expectedback in [ - ('p','abc', '\x00', b''), - ('1p', 'abc', '\x00', b''), - ('2p', 'abc', '\x01a', b'a'), - ('3p', 'abc', '\x02ab', b'ab'), - ('4p', 'abc', '\x03abc', b'abc'), - ('5p', 'abc', '\x03abc\x00', b'abc'), - ('6p', 'abc', '\x03abc\x00\x00', b'abc'), - ('1000p', 'x'*1000, '\xff' + 'x'*999, b'x'*255)]: - expected = bytes(expected, "latin-1") + ('p', b'abc', b'\x00', b''), + ('1p', b'abc', b'\x00', b''), + ('2p', b'abc', b'\x01a', b'a'), + ('3p', b'abc', b'\x02ab', b'ab'), + ('4p', b'abc', b'\x03abc', b'abc'), + ('5p', b'abc', b'\x03abc\x00', b'abc'), + ('6p', b'abc', b'\x03abc\x00\x00', b'abc'), + ('1000p', b'x'*1000, b'\xff' + b'x'*999, b'x'*255)]: got = struct.pack(code, input) self.assertEqual(got, expected) (got,) = struct.unpack(code, got) @@ -371,48 +376,29 @@ class StructTest(unittest.TestCase): big = math.ldexp(big, 127 - 24) self.assertRaises(OverflowError, struct.pack, ">f", big) - def test_1229380(self): - # SF bug 1229380. No struct.pack exception for some out of - # range integers - for endian in ('', '>', '<'): - for fmt in ('B', 'H', 'I', 'L'): - self.assertRaises((struct.error, OverflowError), struct.pack, - endian + fmt, -1) - - self.assertRaises((struct.error, OverflowError), struct.pack, - endian + 'B', 300) - self.assertRaises((struct.error, OverflowError), struct.pack, - endian + 'H', 70000) - - self.assertRaises((struct.error, OverflowError), struct.pack, - endian + 'I', sys.maxsize * 4) - self.assertRaises((struct.error, OverflowError), struct.pack, - endian + 'L', sys.maxsize * 4) - def test_1530559(self): - for endian in ('', '>', '<'): - for fmt in ('B', 'H', 'I', 'L', 'Q', 'b', 'h', 'i', 'l', 'q'): - self.assertRaises(struct.error, struct.pack, endian + fmt, 1.0) - self.assertRaises(struct.error, struct.pack, endian + fmt, 1.5) + for byteorder in '', '@', '=', '<', '>', '!': + for code in integer_codes: + if (byteorder in ('', '@') and code in ('q', 'Q') and + not HAVE_LONG_LONG): + continue + format = byteorder + code + self.assertRaises(struct.error, struct.pack, format, 1.0) + self.assertRaises(struct.error, struct.pack, format, 1.5) self.assertRaises(struct.error, struct.pack, 'P', 1.0) self.assertRaises(struct.error, struct.pack, 'P', 1.5) - def test_unpack_from(self): test_string = b'abcd01234' fmt = '4s' s = struct.Struct(fmt) for cls in (bytes, bytearray): data = cls(test_string) - if not isinstance(data, (bytes, bytearray)): - bytes_data = bytes(data, 'latin1') - else: - bytes_data = data self.assertEqual(s.unpack_from(data), (b'abcd',)) self.assertEqual(s.unpack_from(data, 2), (b'cd01',)) self.assertEqual(s.unpack_from(data, 4), (b'0123',)) for i in range(6): - self.assertEqual(s.unpack_from(data, i), (bytes_data[i:i+4],)) + self.assertEqual(s.unpack_from(data, i), (data[i:i+4],)) for i in range(6, len(test_string) + 1): self.assertRaises(struct.error, s.unpack_from, data, i) for cls in (bytes, bytearray): @@ -433,12 +419,12 @@ class StructTest(unittest.TestCase): # Test without offset s.pack_into(writable_buf, 0, test_string) - from_buf = writable_buf.tostring()[:len(test_string)] + from_buf = writable_buf.tobytes()[:len(test_string)] self.assertEqual(from_buf, test_string) # Test with offset. s.pack_into(writable_buf, 10, test_string) - from_buf = writable_buf.tostring()[:len(test_string)+10] + from_buf = writable_buf.tobytes()[:len(test_string)+10] self.assertEqual(from_buf, test_string[:10] + test_string) # Go beyond boundaries. @@ -450,7 +436,8 @@ class StructTest(unittest.TestCase): # Test bogus offset (issue 3694) sb = small_buf - self.assertRaises(TypeError, struct.pack_into, b'1', sb, None) + self.assertRaises((TypeError, struct.error), struct.pack_into, b'', sb, + None) def test_pack_into_fn(self): test_string = b'Reykjavik rocks, eow!' @@ -460,12 +447,12 @@ class StructTest(unittest.TestCase): # Test without offset. pack_into(writable_buf, 0, test_string) - from_buf = writable_buf.tostring()[:len(test_string)] + from_buf = writable_buf.tobytes()[:len(test_string)] self.assertEqual(from_buf, test_string) # Test with offset. pack_into(writable_buf, 10, test_string) - from_buf = writable_buf.tostring()[:len(test_string)+10] + from_buf = writable_buf.tobytes()[:len(test_string)+10] self.assertEqual(from_buf, test_string[:10] + test_string) # Go beyond boundaries. @@ -515,8 +502,13 @@ class StructTest(unittest.TestCase): self.assertFalse(prefix, msg='encoded bool is not one byte: %r' %packed) - self.assertRaises(IOError, struct.pack, prefix + '?', - ExplodingBool()) + try: + struct.pack(prefix + '?', ExplodingBool()) + except IOError: + pass + else: + self.fail("Expected IOError: struct.pack(%r, " + "ExplodingBool())" % (prefix + '?')) for c in [b'\x01', b'\x7f', b'\xff', b'\x0f', b'\xf0']: self.assertTrue(struct.unpack('>?', c)[0]) @@ -532,6 +524,37 @@ class StructTest(unittest.TestCase): def test_crasher(self): self.assertRaises(MemoryError, struct.pack, "357913941b", "a") + def test_trailing_counter(self): + store = array.array('b', b' '*100) + + # format lists containing only count spec should result in an error + self.assertRaises(struct.error, struct.pack, '12345') + self.assertRaises(struct.error, struct.unpack, '12345', '') + self.assertRaises(struct.error, struct.pack_into, '12345', store, 0) + self.assertRaises(struct.error, struct.unpack_from, '12345', store, 0) + + # Format lists with trailing count spec should result in an error + self.assertRaises(struct.error, struct.pack, 'c12345', 'x') + self.assertRaises(struct.error, struct.unpack, 'c12345', 'x') + self.assertRaises(struct.error, struct.pack_into, 'c12345', store, 0, + 'x') + self.assertRaises(struct.error, struct.unpack_from, 'c12345', store, + 0) + + # Mixed format tests + self.assertRaises(struct.error, struct.pack, '14s42', 'spam and eggs') + self.assertRaises(struct.error, struct.unpack, '14s42', + 'spam and eggs') + self.assertRaises(struct.error, struct.pack_into, '14s42', store, 0, + 'spam and eggs') + self.assertRaises(struct.error, struct.unpack_from, '14s42', store, 0) + + def test_Struct_reinitialization(self): + # Issue 9422: there was a memory leak when reinitializing a + # Struct instance. This test can be used to detect the leak + # when running with regrtest -L. + s = struct.Struct('i') + s.__init__('ii') def test_main(): run_unittest(StructTest) |